The printer had no hatchek — the flattened “v” that appears over letters in Czech — to put over Dvořak’s R. So somebody laboriously inked in all the hatcheks.

'Tis more by fortune, lady, than by merit.

Oh, pillaloo! why should ye go, my boy, and lave all the good atin and drinkin?

The center of percussion also finds more exotic applications, like in tennis dynamics: the so-called sweet spot […] is a special impact point on the racket strings used to prevent jarring of the hand. It is defined either as a vibration node, or as the center of percussion, or as the point where the restitution coefficient […] is maximum and vibrations minimum[…].